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John Brown
Joined: 07 Nov 2002
Posts: 903
Location: Leesburg VA
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 Posted: Wed May 24, 2006 9:03 pm Post subject: Number 931 is down for a bit |
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Oops. Re-did the leakdown and number 2 is 100/62. Not good. Guess we have some work to do before the next race.
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John
80 931 - #931 44Cup
99 Escalade - tows track cars
gone but not forgotten: original 924.org car - 82 |
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924RACR
Joined: 29 Jul 2001
Posts: 9075
Location: Royal Oak, MI, USA
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| Posted: Wed May 24, 2006 10:49 pm Post subject: |
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Rings, then? No chance a valve might be a bit loose?
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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John Brown
Joined: 07 Nov 2002
Posts: 903
Location: Leesburg VA
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| Posted: Thu May 25, 2006 12:54 am Post subject: |
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To the best of my ability the leak was manifest through the oil cap and not the intake or exhaust. Either way it's time to pull the head to look.
In a way I'm kinda glad; for a bit was thinking the newly rebuilt turbo was the source. As it is, the temptation to do an 'in place' freshen up is strong. I did the bottom end of the na car 'in place' and it's not a bad job. Well, compared to pergatory anyway.
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John
80 931 - #931 44Cup
99 Escalade - tows track cars
gone but not forgotten: original 924.org car - 82 |
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ryoji
Joined: 10 Oct 2003
Posts: 168
Location: NNJ
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| Posted: Wed May 31, 2006 9:28 am Post subject: |
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| Quote: | | it's time to pull the head to look |
He knows it has a very high compression, say over 11:1?, and very aggressive cam with very advaced timing setting. So he knew he blew its headgasket... Did not you see bubbles in the reserve when you sent the compressed air in?    
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R.I.P.:a 924 ITA race car |
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John Brown
Joined: 07 Nov 2002
Posts: 903
Location: Leesburg VA
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| Posted: Thu Jun 01, 2006 12:08 am Post subject: |
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| ryoji wrote: | | Quote: | | it's time to pull the head to look |
He knows it has a very high compression, say over 11:1?, and very aggressive cam with very advaced timing setting. So he knew he blew its headgasket... Did not you see bubbles in the reserve when you sent the compressed air in? |
Hey now!! What about your agreement to keep the engine mods secret!? Can't trust anyone now-days!!
The valve guides and seals look pretty suspect. Cylinder walls are good. Having gone this far I'm gonna just pull the block out for a refresh all around. Can't afford new pistions at this time so will have to forego all the illegal mods until next winter. Darn
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John
80 931 - #931 44Cup
99 Escalade - tows track cars
gone but not forgotten: original 924.org car - 82 |
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ryoji
Joined: 10 Oct 2003
Posts: 168
Location: NNJ
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| Posted: Wed Jun 21, 2006 4:08 am Post subject: |
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Not ready for the HyperFest?
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R.I.P.:a 924 ITA race car |
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